<!DOCTYPE html>
<html lang="zh-CN">
<head>
    <meta charset="UTF-8">
    <title>04_文本修饰</title>
    <style>
        h1 {
            font-size: 100px;
            /*underline-下划线 line-through -行内穿过
              overline-上划线 none-无*/
             text-decoration-line: overline;
             /*dashed-虚线 wavy-波浪线 solid-实线*/
             text-decoration-style: solid;
            /*下划线颜色*/
            /* text-decoration-color: blue; */
            /*复合属性*/
            /* text-decoration: overline wavy blue;*/
        }
    </style>
</head>
<body>
    <h1>你好啊，欢迎来学习</h1>
</body>
</html>